- // MIR for `f` before InstCombine
+ // MIR for `f` after InstCombine
  
  fn f(_1: &T) -> *const T {
      debug a => _1;                       // in scope 0 at $DIR/issue-78192.rs:2:13: 2:14
      let mut _0: *const T;                // return place in scope 0 at $DIR/issue-78192.rs:2:23: 2:31
      let _2: &*const T;                   // in scope 0 at $DIR/issue-78192.rs:3:9: 3:10
      let _3: &*const T;                   // in scope 0 at $DIR/issue-78192.rs:3:24: 3:40
      let _4: *const T;                    // in scope 0 at $DIR/issue-78192.rs:3:25: 3:40
      scope 1 {
          debug b => _2;                   // in scope 1 at $DIR/issue-78192.rs:3:9: 3:10
      }
  
      bb0: {
          StorageLive(_2);                 // scope 0 at $DIR/issue-78192.rs:3:9: 3:10
          StorageLive(_3);                 // scope 0 at $DIR/issue-78192.rs:3:24: 3:40
          StorageLive(_4);                 // scope 0 at $DIR/issue-78192.rs:3:25: 3:40
          _4 = &raw const (*_1);           // scope 0 at $DIR/issue-78192.rs:3:26: 3:27
          _3 = &_4;                        // scope 0 at $DIR/issue-78192.rs:3:24: 3:40
-         _2 = &(*_3);                     // scope 0 at $DIR/issue-78192.rs:3:24: 3:40
+         _2 = _3;                         // scope 0 at $DIR/issue-78192.rs:3:24: 3:40
          StorageDead(_3);                 // scope 0 at $DIR/issue-78192.rs:3:40: 3:41
          _0 = (*_2);                      // scope 1 at $DIR/issue-78192.rs:4:5: 4:7
          StorageDead(_4);                 // scope 0 at $DIR/issue-78192.rs:5:1: 5:2
          StorageDead(_2);                 // scope 0 at $DIR/issue-78192.rs:5:1: 5:2
          return;                          // scope 0 at $DIR/issue-78192.rs:5:2: 5:2
      }
  }